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http://www.youtube.com/channel/UC9MAhZQQd9egwWCxrwSIsJQExtreme Trains: Longest Running Steam Train Ever (S1, E5) | Full Episode | History -

The Union Pacific's historic 844 steam locomotive is the longest running steam train in America. Built in 1944, it has never been retired and still runs on UP's mainlines today. See more in Season 1, Episode 5, "Steam Train." #ExtremeTrains
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